Simon Ghyselincks
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Posts
Trace Estimation for Implicit Matrices
A Hutchinson’s and Hutch++ Survey
Implicit matrix trace estimation using only matrix-vector products is a problem that commonly arises in many areas of scientific computing and machine learning. This work explores randomized algorithms including Hutchinson’s and Hutch++.
Jan 18, 2026
43 min
Dimensionality Reduction with the Johnson-Lindenstrauss Lemma
A randomized approach to preserving distances in high-dimensional data
Randomized algorithms provide an alternative approach to improving computational efficiency in high-dimensional data processing where full accuracy can be traded for speed.
Oct 23, 2025
8 min
Score Matching for Density Estimation
Estimation of the probability density function using score matching
Score matching is a method for indirectly estimating the probability density function of a distribution. In this post, I will explain the score matching method as well as some of its limitations.
Jun 22, 2024
17 min
Welcome
A first post using Quarto
Find out more about the tools I’m using to create this blog.
Apr 22, 2024
4 min
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